National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Logan County Airport (KAAA)

Lat: 40.16°NLon: 89.34°WElev: 591ft.

Fair and Breezy

72°F

22°C

Humidity 55%
Wind Speed S 22 mph
Barometer 29.72 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 9 Mar 4:15 pm CDT
Extended Forecast for

Mc Lean IL

  • Tonight

    Tonight: Partly cloudy, with a low around 59. South wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. South southwest wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 78 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 47. South southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 47 °F

    T-storms

  • Wednesday

    Wednesday: Showers, mainly before 1pm. Temperature rising to near 55 by 10am, then falling to around 44 during the remainder of the day. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 55 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 28. North northwest wind 7 to 17 mph, with gusts as high as 26 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 48. West northwest wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 48 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 40. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.

    Low: 40 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Mostly cloudy, with a high near 53. Breezy.

    High: 53 °F

    Mostly Cloudy
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. South wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 78. South southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 47. South southwest wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers, mainly before 1pm. Temperature rising to near 55 by 10am, then falling to around 44 during the remainder of the day. Breezy, with a southwest wind 14 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 28. North northwest wind 7 to 17 mph, with gusts as high as 26 mph.
Thursday
Increasing clouds, with a high near 48. West northwest wind 6 to 13 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 40. Breezy, with a south wind 13 to 22 mph, with gusts as high as 32 mph.
Friday
Mostly cloudy, with a high near 53. Breezy.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Mostly cloudy, with a high near 60.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 43.
Sunday
Rain likely. Cloudy, with a high near 57. Breezy.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Blustery.
Monday
Partly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Lean IL
 40.31°N 89.2°W (Elev. 699 ft)
Last Update:
3:36 pm CDT Mar 9, 2026
Forecast Valid:
4pm CDT Mar 9, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation